Direct-Bandgap Germanium Active Layers Pumped Above Transparency Based on Tensilely Strained Nanomembranes

Boztuğ Yerci Ç. H., Chen F., Sanchez-Perez J. R., Sudradjat F. F., Paskiewicz D. M., Jacobson R. B., ...More

Conference on Lasers and Electro-Optics (CLEO), Maryland, United States Of America, 1 - 06 May 2011 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • City: Maryland
  • Country: United States Of America
  • TED University Affiliated: No


We show that mechanically stressed nanomembranes can be used to introduce sufficient tensile strain in Ge to transform it into a direct-bandgap, efficient light-emitting material that can support population inversion and thus provide optical gain. (C) 2011 Optical Society of America